I have been trying the sector 2 boss battle a few times now, and kills MT and Daka only to have Daka revive when they use a basic attack. I know I need to kill MT first. So my kill order is MT x3 (for the zombie revivve) then Daka. And then I start working on AV. Then Spirit or AV use a basic and it spawn MT or Daka. And Daka will stay even though none of my toons dies. Then Daka revives MT and I have to do it all over again. Eventually my squad gets wittled down and I die.